Lenovo ThinkSystem SR950 V3 System Configuration Manual page 22

Table 2. Components on the front view (continued)
Drive bays 4-7
8
PCIe slot P3
9
NMI button
10
Pull-out information tab
11
System error LED (yellow)
12
System ID button/LED (blue)
13
Network activity LED (green)
14
1 / 7 / 8 / 27 Drive bays
Install drives to these bays. See "Install a hot-swap drive" in ThinkSystem SR950 V3 User Guide or
ThinkSystem SR950 V3 Hardware Maintenance Guide.
Figure 3. 2.5-inch drive bay numbering
2 / 3 / 6 PCIe slots S1-S3
Install PCIe adapters into these PCIe slots. See "Install a PCIe adapter" in ThinkSystem SR950 V3 User
Guide or ThinkSystem SR950 V3 Hardware Maintenance Guide.
4 / 24 Sideband card
Connect the external sideband cables to these sideband cards.
5 / 23 UPI module
Connect the external UPI cables to these UPI modules.
/ / PCIe slots P1-P3
9 25 26
Install PCIe adapters into these PCIe slots.
10 NMI button
Press this button to force a nonmaskable interrupt to the processor. You might have to use a pen or the end
of a straightened paper clip to press the button. You can also use it to force a blue-screen memory dump.
Use this button only when you are directed to do so by Lenovo Support.
ThinkSystem SR950 V3 System Configuration Guide
14
External diagnostics handset connector
22
UPI module (Primary chassis)
23
Sideband card (Primary chassis)
24
PCIe slot P2
25
PCIe slot P1
26
Drive bays 0-3
27
Figure 4. E3.S drive bay numbering